Measuring of oxygen mass-transfer through the gas-liquid interface

Abstract

In the present study, oxygen mass-transfer processes through the liquid-air interface fromgas mixture with variable volume at constant pressure were investigated. This paperdescribes a device based on the electrochemical oxygen sensor placed on the liquid-airsurface. The oxygen sensor measured the decrease of oxygen concentration in the smallvolume under the device, that is in contact with deoxygenated liquid. Experimental dataobtained by the device were introduced to a novel mathematical model, which allowedcalculating diffusion flow through the liquid-air interface and diffusional conductivity P/1of liquid surface.By means of the developed device it is possible to measure the total impediment of theair-water interface to oxygen mass-transfer.